Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  NGC 3198
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NGC 3198 in Ursa Major, 



    
        

            Steve Milne
NGC 3198 in Ursa Major
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Getting plate-solving status, please wait...
NGC 3198 in Ursa Major, 



    
        

            Steve Milne
NGC 3198 in Ursa Major
Powered byPixInsight

Equipment

Imaging Telescopes Or Lenses
TEC-140
Imaging Cameras
QSI 690 WSG-8
Mounts
10 Micron GM2000 HPS II UP
Filters
Astrodon Ha 3nm · Astrodon Tru-Balance LRGB E-Series Gen 2 Blue · Astrodon Tru-Balance LRGB E-Series Gen 2 Green · Astrodon Tru-Balance LRGB E-Series Gen 2 Red · Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance
Accessories
TEC Field Flattener
Software
Pixinsight 1.8 · Sequence Generator Pro · Adobe Photoshop 6 CS · Open PHD PHD 2.5
Guiding Telescopes Or Lenses
TEC-140

Acquisition details

Dates:
April 8, 2021
Frames:
Integration:
22h 20'
Avg. Moon age:
26.19 days
Avg. Moon phase:
12.14%

Basic astrometry details

Astrometry.net job: 4411549

RA center: 10h19m56s.9

DEC center: +45°3310

Pixel scale: 0.744 arcsec/pixel

Orientation: 269.673 degrees

Field radius: 0.426 degrees

Resolution: 3259x2529

Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

NGC 3198 (Herschel 146) is a barred spiral galaxy around 50 million light years away in the constellation of Ursa Major. It is one of the 'Rosse Spirals', having been declared to be 'spiral or curvilinear in nature' by William Parsons, Third Earl of Rosse (Observations of the Nebula, June 1850). Although I have not found a definitive source for this, it seems likely that it was first observed through Rosse's 6 foot mirror - the 'Leviathan of Parsonstown', then the world's largest telescope.

NGC 3198 was photographed between 16 March and 8 April 2021.

Capture details are as follows:

Telescope: TEC 140

Camera: QSI 690

Filters: Astrodon

Mount: 10 Micron GM2000HPS

Ha: 19 x 1200s

Lum: 42 x 600s

Red: 36 x 300s

Green: 36 x 300s

Blue: 36 x 300s

A total of 22 hours and 20 minutes exposure.

Data: Steve Milne & Barry Wilson

Processing: Steve Milne

Comments

Sky plot

Sky plot

Histogram

NGC 3198 in Ursa Major, 



    
        

            Steve Milne